Can yo use this type of conductive ink to cut glasss in the microwave?

I would not put this in the microwave.

Could this be used to repair electric circuit in a car?

Yes, I used it to repair the circuit board on a dishwasher

Will this pen work in an upside down condition? For example, an angled rear car glass with a defroster broken trace.

If aesthetics are of little concern, this will probably work. What I would do is clean the broken trace with isopropyl alcohol 91%. Retrace with this pen, test, then apply 2-part clear epoxy over the retrace to protect it <important if you don’t want the morning dew to dissolve the ink the next day. you may have to lightly sand the broken trace beforehand if the ink doesn’t stick well also may have to lightly sand the protective coating of the 2 unbroken trace ends, so this ink will be able to conduct. It may be tricky using this upside down, in which case maybe dab the ink onto a small brush and apply that way.

Need to fix accidentally removed solder pads on car key fob is it possible to add actual solder after dry to connect thin wire?

The conductive ink isn't likely to take solder - you could just tape the wires down onto the ink lines, but not for permanent installation.

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Circuit Scribe Conductive Ink Pen: Draw Circuits Instantly | Non-toxic silver ink, creates circuits & switches easily, award-winning STEM design for creative electronics learning

Q: Need to fix accidentally removed solder pads on car key fob is it possible to add actual solder after dry to connect thin wire?

The conductive ink isn't likely to take solder - you could just tape the wires down onto the ink lines, but not for permanent installation.

Product ID: 741639030

Details

Age Range (Description)
Adult
Brand
Circuit Scribe
Color
Silver
Ink Color
Silver
Writing Instrument Form
Roller Ball

⚡0.05-0.2Ω resistance for efficient conductivity

📏60-200 meters of conductive ink per pen

🖊️Draw circuits on any surface like a regular pen

KD 4.80

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Description

⚡ Sketch the future—one circuit at a time!

PRECISION ENGINEERING - Ultra-low resistance ensures your designs perform with maximum efficiency.
LONG LASTING INK SUPPLY - Write up to 200 meters of conductive pathways—power your projects without interruption.
INSTANT CIRCUIT CREATION - Draw fully functional circuits anywhere with smooth silver conductive ink.
KICKSTARTER PROVEN INNOVATION - Trusted by over 12,000 backers, the ultimate tool for makers and tech visionaries.
VERSATILE SURFACE COMPATIBILITY - Works on any surface your rollerball pen can handle—no limits to creativity.

The Circuit Scribe Conductive Ink Pen is a non-toxic, silver microparticle-based rollerball pen that enables users to draw functional electronic circuits on virtually any surface. With ultra-low resistance (0.05-0.2 ohms/sq/mil) and an ink capacity allowing 60-200 meters of conductive lines, it’s the go-to tool for rapid prototyping and creative electronics, backed by a strong Kickstarter community.

Specifications

ASIN	B00OZATJ3A
Additional Features	Non-Toxic
Age Range (Description)	Adult
Age Range Description	Adult
Best Sellers Rank	#12,865 in Computer Accessories & Peripherals
Body Shape	Round
Brand	Circuit Scribe
Brand Name	Circuit Scribe
Closure Type	Snap
Color	Silver
Customer Reviews	4.0 out of 5 stars 1,651 Reviews
Drill Point	Ball
Global Trade Identification Number	00868693000093
Grip Type	Round
Hand Orientation	Right
Hardness	H
Included Components	Ink
Ink Base	Hybrid
Ink Color	Silver
Item Dimensions	6 x 0.4 x 0.4 inches
Item Weight	0.01 Kilograms
Line Size	0_9mm
Manufacturer	Electroninks Writeables
Material	Silver Microparticles & Water
Material Type	Silver Microparticles & Water
Model Name	CS-KS-PEN-1X
Model Number	CS-KS-PEN-1X
Recommended Uses For Product	Drawing conductive circuits, Use with other Circuit Scribe electronic products
Style	Contemporary
Theme	science and creativity
UPC	868693000093
Unit Count	1.0 Count
Warranty Description	30 day warranty against manufacturer defects
Water Resistance Level	Not Water Resistant
Writing Instrument Form	Roller Ball Pen
Writing Technique	rollerball

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